Handles that fit this blade

The SMOR II retractable is sold without Blades. The Handle, designed by Swann Morton, features a forward position to assist with easy blade fitment and removal along with audible clicks to indicate the mid usage position and the rear safe position for when the knife is not in use.
Can also be used with the SM01, SM01B, SM02, SM03, SM03B and SM04 blades.
Handle length without blade fitted 154mm, width 25.8mm, thickness 13.3mm
All measurements are for guidance only.

The SM00 is a heavy-duty cast metal handle for industrial applications though will also be of interest to the D.I.Y. enthusiast for those tougher jobs.
The 4302 is supplied with no Blades.
Handle length 123mm, width 19mm, thickness 9.5mm.
The handle can be opened with a screwdriver for blade changing.
There is a choice of 4 heavy-duty blades: SM01, SM02, SM03 and SM04.
There are also bull-nose versions of the SM01 and SM03.

The SM0-R is a heavy-duty cast metal handle with retractable blade mechanism for industrial applications though will also be of interest to the D.I.Y. enthusiast for those tougher jobs.
The 4303 is supplied with no Blades
Handle length 125mm, width 18mm, thickness 14.25mm.
The handle can be opened by hand for blade changing.
It has the added safety advantage of a retractable blade mechanism
There is a choice of 4 heavy-duty blades: SM01, SM02, SM03 and SM04.
There are also bull-nose versions of the SM01 and SM03.